Flashing



April 18, 1939. R DOING v 2,154,734

FLASHING Filed April 18, 1938 INVENTOR. Warren gain BY j M ATTORNEY.

Patented Apr. 18, 1939 NI D TATES PATENT OFFICE FLASHING .Warren', P. Doing, Garden City, N.v Y., assignor j to.At las Supply Co. Inc., Brooklyn, N. Y.,.a corere ie of Ne o Application April 18, 1938, Serial No. 202,602

8 Claims. (Cl. 72,-127) rugations extendingtransversely across the same, said corrugations comprising continuous ridge and Valley formations normally of equal amplitude and extending on opposite sides of the central horizontal plane of the sheet.

The corrugations on the flashing sheet, particularly the alternate ridges A and the valleys B defining the same, are continuous transversely across the flashing sheet, except that a change 30 bersome machine. Further, even with a machine in amplitude of either or 'bothof the ridge and 1!) the "bending operation 7 caused a flattening valley formations with respect to the normal equal where a corrugated flashing is involved or a creasamplitude of the same is provided in spaced zones ing Where a zigzag flashing is involved, in either or areas indicated as I0, II, I2 and I3 in Figure case preventing the proper passage of Water 1, such zones or areas having the ridge and valley is seeping through the wall. Attempts have been formations such that the amplitude of eitherof made to obviate this difficulty; the flashing, has the same and the total of the two is less than the been formed to provide a series of corrugated amplitude thereof in the remainder of the corsections having therebetween flat surfaces definrugations spaced and connected by such zones, ing the bending zones, but in eliminating the such difference in amplitude permitting for ease 2O tendency to crack or a requirement for a main bending of the flashing as required. chine the path for the flow of seepage Water has To illustrate, referring to Figures 1 to 3 inclubeen lost. sive, the amplitude of the ridges A and valleys Generally, it is an object of this invention to B of the sections I4, I5, I6, I! and I8, leading provide a through-wallflashing of the corrugated to and connected by zones Iil, II, I2 and I3 are or the like type, wherein "bending zones are in equal and opposite; whereas along zones I and the nature of sections corrugated in contour and I2, the ridges A in such zones are continuations forming continuations of the corrugations deof and have the same amplitude as those in secfining the vertical and horizontal sections of the tions I4, I5, I6 and I1, While the valleys B in flashing, such bending zone corrugation forsuch zones are flatten-ed and of less amplitude mation being of less angular r e, he r spective than those of sections M le, and |t n; while 30 corrugations defining the bending zonebeing with respect to zones II and I3, the valleys B" so formed that the interior and exterior bend of such zones are continuations of and have the Will at all times provide a continuous flow of same amplitude as those in sections I5I6 and seepage water through the valley. II-I8, and the ridges A" in such zones are flat- 33 These and other advantages, capabilities and tened and of less amplitude than those of sec- 35 features of the invention will appear from the tions I5-I6 and I'l I8 subjoined detailed description of onespecific em- This lessening in amplitude respectively of the bodiment thereof illustrated in the accompanyvalleys B in zones I0 and I2 and the ridges A" ing drawing, in which in zones H and I3, as shown in detail in Figures 40 Figure 1 a p V w Of a flashing strip p 2 and 3, is more aptly illustrated functionally in 4Q to bending. the sectionof a flashing sheet bent longitudinally Figure 2 is an end elevation in section taken along its length at the zones aforesaid to proalong lines 22 of Figure 1. vide up bends with respect to the first named Figure 3 s a end elevation in Sect on taken zones, as illustrated by letters C in Figure 6, and

along lines 3--3 of Figure 1. down bends in the second named zones as illus- Figure 4 is a front elevation in section taken trated by the letters D in Figure 6. along lines f Figure As indicated in such figure the ridge and valley Figure 5 is an end elevation in section taken formation extending along such zones IE, to I3 along lines 5-5 of Figure 1. is of less combined amplitude than that of the Figure 6 is a front elevation in section taken ridges and valleys of sections I4 to IS; in the first 50 along lines 66 of Figure 1 showing the flashing named zones the ridges being of less amplitude sheet as applied in a course of masonry. than the valleys, and in the second named zones Referring to the reference characters in the the valleys being of less amplitude than the drawing, the flashing sheet shown in plan in ridges, providing a zone or area of less depth for Figure 1 is formed by stamping to provide corbending between the connected deeper corrugated 55 sections [4 to H3, wherein the ridges and valleys defining the corrugations are regular in amplitude. By virtue of the spacing or zone formation having a lessening of amplitude respectively of the valleys and ridges without breaking the continuous corrugated contour, the desired bending may be accomplished while as indicated in Figure 6 the path along the valleys for seepage of water is maintained, the valley at all times being lower than the lowermost portion of the adjacent ridge to thus provide a continuous path of flow for seepage water as the flashing isbent for an installation, shown partially broken'away in Figure 6.

As shown in Figures'l and 3, some of the ridge formations have stamped depressions I9 formed therein, the same being spaced and serving as looking formations to bond the flashing as it is embedded in plaster between a masonry course to prevent the flashing from horizontal or lateral displacement.

The flashing sheets, being of corrugated conformation, may be interlocked at their lateral ends to provide a continuous length applicable for use in building construction, the respective depressions forming the bonding elements serving as guides in conjunction with the normal corrugated formation of the flashing sheets to maintain the interlocked sheets from lateral displacement or separation.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

I claim:

1. A through Wall flashing sheet having transverse corrugations extending continuously thereacross, said corrugations being interrupted as to contour along their length by short sections of different amplitude than that of the remaining long sections connected thereby, said short corrugated sections serving as longitudinal bending zones for said flashing sheet.

2. A through wall flashing sheet having continuous transverse corrugations extending thereacross, said corrugations being interrupted as to contour by spaced short sections of different amplitude than that of the remaining sections connected thereby, said short corrugated sections defining a continuous longitudinal area and serv-' ing as longitudinal bending zones for said flashing sheet.

3. A through wall flashing sheet having continuous transverse corrugations defining alternate ridge and valley formations extending thereacross, said ridge and valley formations of said corrugations being interrupted as to contour along their length by short sections of different amplitude than that of the long sections connected thereby, said short corrugated sections defining a continuous longitudinal area and serving as longitudinal bending zones for said flashing sheet.

4. A through wall flashing sheet having continuous transverse corrugations defining ridge and valley formations extending thereacross, said corrugations being interrupted alternately as to contour along their length by short sections of corrugations, wherein successively the ridges and valleys are of different amplitude than that of the long sections connected thereby, said short corrugated sections defining continuous longitudinal areas serving successively as bending zones for said flashing sheet to provide a predetermined zigzag right angular conformation of the flashing sheet upon bending.

5. A through wall flashing sheet having continuous transverse corrugations defining alternate ridge and valley formations extending thereacross, said ridge and valley formations of said corrugations being interrupted as to contour along their length by short sections of different amplitude than that of the long sections connected thereby, said short corrugated sections defining a continuous longitudinal area and serving as longitudinal bending zones for said flashing sheet, the valleys of the corrugation being so formed to provide at all times a continuous transverse trough for seepage water along the length and at the bending zones.

6. A through wall flashing sheet having continuous transverse corrugations defining ridge and valley formations extending thereacross, said corrugations being interrupted alternately as to contour along their length by short sections of corrugations, wherein successively the ridges and valleys are of different amplitude than that of the long sections connected thereby, said short corrugated sections defining continuous longitudinal areas serving successively as bending zones for said flashing sheet to provide a predetermined zigzag right angular conformation of the flashing sheet upon bending, the valleys of the corrugation being so formed to provide at all times a continuous transverse trough for seepage water along the length and at the bending zones.

'7. A through wall flashing sheet having continuous transverse corrugations comprised of ridge and valley formations extending thereacross, said transverse corrugations being shaped to provide lengths having common amplitude of the ridge and valley formations spaced by and connected to shorter lengths, wherein either the ridge or valley formations are of lesser amplitude than the other, the last named shorter lengths extending longitudinally along the flashing sheet and providing a longitudinal bending zone. 1': 8. A through Wall flashing sheet having continuous transverse corrugations comprised 011 ridge and valley formation extending thereacross, said transverse corrugations being shaped to provide body lengths having common amplitude of the ridge and valley formations spaced by and connected to shorter lengths, wherein either the ridge or valley formations are of lesser amplitude than the other, the last named shorter lengths extending longitudinally along the flashing sheet and providing a longitudinal bending zone, the ridge and valley formations of successive shorter lengths being such that the ridge of one of said connecting shorter lengths is a continuation of the ridge of the spaced body lengths leading thereto, while the valley of said shorter length is of lesser amplitude than that of the valley of the body length leading thereto, While as to the next connecting shorter length, the valley thereof is a continuation of that of the body length leading thereto, and the ridge thereof is of lesser amplitude than that of the ridge of the body length leading thereto.

WARREN P. DOING. 

